J/A+A/630/A80ivo://CDS.VizieR/J/A+A/630/A80doi:10.26093/cds/vizier.36300080CDSSchaffenroth V.Barlow B.N.Geier S.Vuckovic M.Kilkenny D.Wolz M.,Kupfer T.Heber U.Drechsel H.Kimeswenger S.Marsh T.Wolf M.,Pelisoli I.Freudenthal J.Dreizler S.Kreuzer S.Ziegerer E.2020-09-28T07:08:59Z2020-01-31T11:44:34ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frsurveyseclipsing-binary-starsspectroscopic-binary-starsvisible-astronomytrigonometric-parallaxproper-motionsphotometryEclipsing post-common-envelope binaries are highly important for resolving the poorly understood, very short-lived common-envelope phase of stellar evolution. Most hot subdwarfs (sdO/Bs) are the bare helium-burning cores of red giants that have lost almost all of their hydrogen envelope. This mass loss is often triggered by common-envelope interactions with close stellar or even substellar companions. Cool companions to hot subdwarf stars such as late-type stars and brown dwarfs are detectable from characteristic light-curve variations - reflection effects and often eclipses. In the recently published catalog of eclipsing binaries in the Galactic Bulge and in the Asteroid Terrestrial-impact Last Alert System (ATLAS) survey, we discovered 125 new eclipsing systems showing a reflection effect seen by visual inspection of the light curves and using a machine-learning algorithm, in addition to the 36 systems previously discovered by the Optical Gravitational Lesing Experiment (OGLE) team. The Eclipsing Reflection Effect Binaries from Optical Surveys (EREBOS) project aims at analyzing all newly discovered eclipsing binaries of the HW Vir type (hot subdwarf + close, cool companion) based on a spectroscopic and photometric follow up to derive the mass distribution of the companions, constrain the fraction of substellar companions, and determine the minimum mass needed to strip off the red-giant envelope. To constrain the nature of the primary we derived the absolute magnitude and the reduced proper motion of all our targets with the help of the parallaxes and proper motions measured by the Gaia mission and compared those to the Gaia white-dwarf candidate catalog. It was possible to derive the nature of a subset of our targets, for which observed spectra are available, by measuring the atmospheric parameter of the primary, confirming that less than 10% of our systems are not sdO/Bs with cool companions but are white dwarfs or central stars of planetary nebula. This large sample of eclipsing hot subdwarfs with cool companions allowed us to derive a significant period distribution for hot subdwarfs with cool companions for the first time showing that the period distribution is much broader than previously thought and is ideally suited to finding the lowest-mass companions to hot subdwarf stars. The comparison with related binary populations shows that the period distribution of HW Vir systems is very similar to WD+dM systems and central stars of planetary nebula with cool companions. In the future, several new photometric surveys will be carried out, which will further increase the sample of this project, providing the potential to test many aspects of common-envelope theory and binary evolution.2019A&A...630A..80Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/630/A80CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/345 : Gaia DR2 (Gaia Collaboration, 2018)I/347 : Distances to 1.33 billion stars in Gaia DR2J/A+A/496/813 : Binary PNe towards the Galactic bulge (Miszalski+, 2009)J/AcA/63/115 : OGLE-III Galactic disk eclipsing binaries (Pietrukowicz+, 2013)J/AcA/65/39 : OGLE Galactic Bulge ultra-short-period binariesJ/A+A/621/A38 : Gaia catalogue of hot subluminous stars (Geier+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/630/A80https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/630/A80http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/630/A80https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/630/A80https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/630/A80http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/630/A80GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/630/A80/tablea3 (Orbital parameters, OGLE and Gaia magnitudes, and coordinates of central stars of planetary nebula from Miszalski et al. (2009A&A...496..813M, Cat. J/A+A/496/813))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/630/A80/tablea3?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/630/A80/tablea3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/630/A80/tablea3?GETtext/xml+votable180.050000true266.4032083-23.04058330.005555555555555556Cone search capability for table J/A+A/630/A80/tablea4 (Gaia parallaxes, proper motions and calculated reduced proper motions, distances, absolute G magnitudes, and reddening of the HW Vir candidates and published HW Vir systems)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/630/A80/tablea4?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/630/A80/tablea4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/630/A80/tablea4?GETtext/xml+votable180.050000true265.335625-34.58013890.005555555555555556Cone search capability for table J/A+A/630/A80/tablea5 (Gaia parallaxes, proper motions and calculated reduced proper motions, distances, absolute G magnitudes and reddening of the white dwarf candidates)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/630/A80/tablea5?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/630/A80/tablea5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/630/A80/tablea5?GETtext/xml+votable180.050000true269.1614167-31.27466670.005555555555555556Cone search capability for table J/A+A/630/A80/tablea6 (Gaia parallaxes, proper motions and calculated reduced proper motions, distances, absolute G magnitudes and reddening of central stars of planetary nebula from Miszalski et al. (2009A&A...496..813M, Cat. J/A+A/496/813))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/630/A80/tablea6?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/630/A80/tablea6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/630/A80/tablea6?GETtext/xml+votable180.050000true270.109-34.13397220.005555555555555556Cone search capability for table J/A+A/630/A80/tablea1 (Orbital parameters, Gaia and OGLE magnitudes, and coordinates of the HW Vir candidates and published HW Vir systems)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/630/A80/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/630/A80/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/630/A80/tablea1?GETtext/xml+votable180.050000true265.335625-34.58013890.005555555555555556Cone search capability for table J/A+A/630/A80/tablea2 (Orbital parameters, OGLE and Gaia magnitudes, and coordinates of the white dwarf candidates)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/630/A80/tablea2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/630/A80/tablea2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/630/A80/tablea2?GETtext/xml+votable180.050000true269.1614167-31.27466670.0055555555555555565/7183 7198 6/2742 3583 4271 6108 6408 6477 6713 7830 7893 9775 10024 12835 12927 12997 13012 13261 13339 13497 13811 14233 14476 14573 14700 14779 14781 15196 15504 15550 19831 19984 20877 20891 21041 21285 21504 21867 22148 22416 22475 22863 23726 24664 25187 25845 25921 26112 26698 28687 28698-28699 28702-28703 28707 28711-28712 28717 28719 28721-28723 28725 28727 28730 28746 28751 28768-28770 28772 28774 28777-28778 28780-28782 28786 28796 28798 28800-28801 28804 28821 28823 28837-28838 28841 28846 28856-28857 28861 28865-28867 28869 28871-28873 28876 28880-28882 28885 28887 28891 28894 28907 28910-28911 28914 28916 28973 28981 29058 29147 29185 29203 29253 30168 30287 30457 30574 31497 31817 31887 32025 32581 32666 33097 37247 37328 37905 37914 38667 38857 39803 40883 41629 41666-41667 41672 44224 48765 48840 48885 48944 489721.9821045660507152e-19 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/630/A80?format=asciiOpticaldefaultJ/A+A/630/A80/tablea3Orbital parameters, OGLE and Gaia magnitudes, and coordinates of central stars of planetary nebula from Miszalski et al. (2009A&A...496..813M, Cat. J/A+A/496/813)SimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSample[1/6] Sample (G1)src.sampleintTargetTarget namemeta.id;meta.maincharRAO? OGLE right ascension (J2000)pos.eq.ranullableDEO? OGLE declination sign (J2000)pos.eq.decnullableRA_ICRS? Gaia right ascension (ICRS) at Ep=2015.5pos.eq.ranullableDE_ICRS? Gaia declination sign (ICRS) at Ep=2015.5pos.eq.decnullableImag? OGLE I magnitudemagphot.mag;em.opt.IfloatnullableVmag? OGLE V magnitudemagphot.mag;em.opt.IfloatnullableGmag? Gaia G magnitudemagphot.mag;em.optfloatnullablee_Gmag? rms uncertainty on Gmagmagstat.error;phot.magfloatnullableGBPmag? Gaia GBP magnitudemagphot.mag;em.opt.Bfloatnullablee_GBPmag? rms uncertainty on GBPmagmagstat.error;phot.magfloatnullableGRPmag? Gaia GRP magnitudemagphot.mag;em.opt.Rfloatnullablee_GRPmag? rms uncertainty on GRPmagmagstat.error;phot.magfloatnullableGBP-GRP? GPB-GRP colour indexmagphot.color;em.opt.B;em.opt.RfloatnullablePer? Perioddtime.perioddoublenullableT0? Epoch (HJD-2400000)dtime.epochdoublenullableONameOther namemeta.idchar_RAGaia if not OGLE (right ascension part)degpos.eq.ra;meta.main_DEGaia if not OGLE (declination part)degpos.eq.dec;meta.mainJ/A+A/630/A80/tablea4Gaia parallaxes, proper motions and calculated reduced proper motions, distances, absolute G magnitudes, and reddening of the HW Vir candidates and published HW Vir systemsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSample[1/6] Sample (G1)src.sampleintTargetTarget namemeta.id;meta.maincharPlxParallaxmaspos.parallaxfloate_Plxrms uncertainty on Parallaxmasstat.error;pos.parallaxfloatpmRAProper motion along RA, pmRA*cosDEmas/yrpos.pm;pos.eq.rafloate_pmRArms uncertainty on pmRAmas/yrstat.error;pos.pm;pos.eq.rafloatpmDEProper motion along DEmas/yrpos.pm;pos.eq.decfloate_pmDErms uncertainty on pmDEmas/yrstat.error;pos.pm;pos.eq.decfloatGMAG? Absolute Gaia G magnitudemagphys.magAbsfloatnullablee_GMAG? rms uncertainty on GMAGmagstat.errorfloatnullableHGReduced proper motionphys.magAbsfloate_HGrms uncertainty on HGstat.errorfloatDist? Distancekpcpos.distance;pos.heliocentricdoublenullablee_Dist? rms uncertainty on Distkpcstat.errordoublenullableAG? Absorption in G bandmagphys.absorptionfloatnullableE(B-V)? Reddeningmagphot.color.excessfloatnullableGaiaDistDisplay the Gaia DR2 distance data (Bailer-Jones et al., 2018, Cat. I/347)meta.ref.urlchar_RAGaia if not OGLE (right ascension part)degpos.eq.ra;meta.main_DEGaia if not OGLE (declination part)degpos.eq.dec;meta.mainJ/A+A/630/A80/tablea5Gaia parallaxes, proper motions and calculated reduced proper motions, distances, absolute G magnitudes and reddening of the white dwarf candidatesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSample[1/6] Sample (G1)src.sampleintTargetTarget namemeta.id;meta.maincharPlxParallaxmaspos.parallaxfloate_Plxrms uncertainty on Parallaxmasstat.error;pos.parallaxfloatpmRAProper motion along RA, pmRA*cosDEmas/yrpos.pm;pos.eq.rafloate_pmRArms uncertainty on pmRAmas/yrstat.error;pos.pm;pos.eq.rafloatpmDEProper motion along DEmas/yrpos.pm;pos.eq.decfloate_pmDErms uncertainty on pmDEmas/yrstat.error;pos.pm;pos.eq.decfloatGMAG? Absolute Gaia G magnitudemagphys.magAbsfloatnullablee_GMAG? rms uncertainty on GMAGmagstat.errorfloatnullableHGReduced proper motionphys.magAbsfloate_HGrms uncertainty on HGstat.errorfloatDist? Distancekpcpos.distance;pos.heliocentricdoublenullablee_Dist? rms uncertainty on Distkpcstat.errordoublenullableAG? Absorption in G bandmagphys.absorptionfloatnullableE(B-V)? Reddeningmagphot.color.excessfloatnullableGaiaDistDisplay the Gaia DR2 distance data (Bailer-Jones et al., 2018, Cat. I/347)meta.ref.urlchar_RAGaia if not OGLE (right ascension part)degpos.eq.ra;meta.main_DEGaia if not OGLE (declination part)degpos.eq.dec;meta.mainJ/A+A/630/A80/tablea6Gaia parallaxes, proper motions and calculated reduced proper motions, distances, absolute G magnitudes and reddening of central stars of planetary nebula from Miszalski et al. (2009A&A...496..813M, Cat. J/A+A/496/813)Sample[1/6] Sample (G1)src.sampleintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTargetTarget namemeta.id;meta.maincharPlxParallaxmaspos.parallaxfloate_Plxrms uncertainty on Parallaxmasstat.error;pos.parallaxfloatpmRAProper motion along RA, pmRA*cosDEmas/yrpos.pm;pos.eq.rafloate_pmRArms uncertainty on pmRAmas/yrstat.error;pos.pm;pos.eq.rafloatpmDEProper motion along DEmas/yrpos.pm;pos.eq.decfloate_pmDErms uncertainty on pmDEmas/yrstat.error;pos.pm;pos.eq.decfloatGMAG? Absolute Gaia G magnitudemagphys.magAbsfloatnullablee_GMAG? rms uncertainty on GMAGmagstat.errorfloatnullableHGReduced proper motionphys.magAbsfloate_HGrms uncertainty on HGstat.errorfloatDist? Distancekpcpos.distance;pos.heliocentricdoublenullablee_Dist? rms uncertainty on Distkpcstat.errordoublenullableAG? Absorption in G bandmagphys.absorptionfloatnullableE(B-V)? Reddeningmagphot.color.excessfloatnullableGaiaDistDisplay the Gaia DR2 distance data (Bailer-Jones et al., 2018, Cat. I/347)meta.ref.urlchar_RAGaia if not OGLE (right ascension part)degpos.eq.ra;meta.main_DEGaia if not OGLE (declination part)degpos.eq.dec;meta.mainJ/A+A/630/A80/tablea1Orbital parameters, Gaia and OGLE magnitudes, and coordinates of the HW Vir candidates and published HW Vir systemsSimbadNameSimbad column added by the CDSmeta.idchare_GBPmag? rms uncertainty on GBPmagmagstat.error;phot.magfloatnullableONameOther namemeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSample[1/6] Sample (G1)src.sampleintTargetTarget namemeta.id;meta.maincharRAO? OGLE right ascension (J2000)pos.eq.ranullableDEO? OGLE declination sign (J2000)pos.eq.decnullableRA_ICRS? Gaia right ascension (ICRS) at Ep=2015.5pos.eq.ranullableDE_ICRS? Gaia declination sign (ICRS) at Ep=2015.5pos.eq.decnullableImag? OGLE I magnitudemagphot.mag;em.opt.IfloatnullableVmag? OGLE V magnitudemagphot.mag;em.opt.IfloatnullableGmag? Gaia G magnitudemagphot.mag;em.optfloatnullablee_Gmag? rms uncertainty on Gmagmagstat.error;phot.magfloatnullableGBPmag? Gaia GBP magnitudemagphot.mag;em.opt.BfloatnullableGRPmag? Gaia GRP magnitudemagphot.mag;em.opt.Rfloatnullablee_GRPmag? rms uncertainty on GRPmagmagstat.error;phot.magfloatnullableGBP-GRP? GPB-GRP colour indexmagphot.color;em.opt.B;em.opt.RfloatnullablePer? Perioddtime.perioddoublenullableT0? Epoch (HJD-2400000)dtime.epochdoublenullable_RAGaia if not OGLE (right ascension part)degpos.eq.ra;meta.main_DEGaia if not OGLE (declination part)degpos.eq.dec;meta.mainJ/A+A/630/A80/tablea2Orbital parameters, OGLE and Gaia magnitudes, and coordinates of the white dwarf candidatesSimbadNameSimbad column added by the CDSmeta.idcharGRPmag? Gaia GRP magnitudemagphot.mag;em.opt.RfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSample[1/6] Sample (G1)src.sampleintTargetTarget namemeta.id;meta.maincharRAO? OGLE right ascension (J2000)pos.eq.ranullableDEO? OGLE declination sign (J2000)pos.eq.decnullableRA_ICRS? Gaia right ascension (ICRS) at Ep=2015.5pos.eq.ranullableDE_ICRS? Gaia declination sign (ICRS) at Ep=2015.5pos.eq.decnullableImag? OGLE I magnitudemagphot.mag;em.opt.IfloatnullableVmag? OGLE V magnitudemagphot.mag;em.opt.IfloatnullableGmag? Gaia G magnitudemagphot.mag;em.optfloatnullablee_Gmag? rms uncertainty on Gmagmagstat.error;phot.magfloatnullableGBPmag? Gaia GBP magnitudemagphot.mag;em.opt.Bfloatnullablee_GBPmag? rms uncertainty on GBPmagmagstat.error;phot.magfloatnullablee_GRPmag? rms uncertainty on GRPmagmagstat.error;phot.magfloatnullableGBP-GRP? GPB-GRP colour indexmagphot.color;em.opt.B;em.opt.RfloatnullablePer? Perioddtime.perioddoublenullableT0? Epoch (HJD-2400000)dtime.epochdoublenullableONameOther namemeta.idchar_RAGaia if not OGLE (right ascension part)degpos.eq.ra;meta.main_DEGaia if not OGLE (declination part)degpos.eq.dec;meta.main